I'm sorry but you're not looking at any type of details. The Brawn chassis was absolutely dominant in the first 6 races...with no other team that could really come close to challenging them in the dry. By the time RBR had come on they had to fight off a very strong Mclaren and Brawn (as well as a few others) who were very competitive on certain tracks. Then you add the fact that RBR was using a Renault powerplant that was very weak at tracks like Monza and Spa as the results showed. And then you had Vettel's blown engine at Europe as well as other engines issues that ended costing him places on the grid....none of which JB had to deal with. Bottom line is that Brawn had no competition in the first 6 races...that's a fact.
I won't waste my time going any further as you only seem to want to pick out what suits your argument. I rate Button and Barichello about the same, both having their strong suits in different areas. Barichello would have likely taken Button out this year had it not been for his brake issues in the first 7 races or so anyway. And I would also put Webber in there with them, with Vettel being the stronger driver of the three, up with the top 5 on the grid. I think most of us can confidently say - if Vettel was in the Brawn last year he would have dominated either Barichello or Button as he would have been consistently toward the front more often than either of them.
On another note - Great to Button has joined with Mclaren. Should be interesting to see who takes the Brawn seats and what ends up happening to Raikkonen.
Tyred Tires: If you're so confident
Button is on the same level as Hamilton why don't you put your money where your mouth is? I'll put $100 (sorry don't know what that is in Euro's
) on Hamilton outperforming Button in 2/3's of the races next year 👍 Otherwise, as they say talk is cheap, especially in an online debate